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Periodic Table--Neon
Neon has three isotopes: 20Ne (90.48%), 21Ne (0.27%) and 22Ne (9.25%). 21Ne and 22Ne are nucleogenic and their variations are well understood. In contrast, 20Ne is not known to be nucleogenic, and the causes of its variation in the Earth have been hotly debated. The principal nuclear reactions which generate neon isotopes are n,à reactions on 24Mg and 25Mg, which produce 21Ne and 22Ne, respectively. The à particles are derived from U-series decay chains, while the neutrons are mostly produced by secondary reactions from à particles. The net result yields a trend towards lower 20Ne/22Ne and higher 21Ne/22Ne ratios observed in uranium-rich rocks such as granites. Isotopic analysis of exposed terrestrial rocks has demonstrated the cosmogenic production of 21Ne (Marty and Craig, 1987). This isotope is generated by spallation reactions on Mg, Na, Si and Al. By analyzing all three isotopes, the cosmogenic......

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Title: Neon
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1. Neon
   

   neon. Did you know that neon is a Greek word that means "new"? Neon is the element
   that I am most interested in. ... Neon?s atomic number is #10. ... ...

2. Neon
   

   Neon. Studies | About us | >> Resources Resources on Isotopes Periodic Table--Neon
   Neon has three isotopes: 20Ne (90.48%), 21Ne (0.27%) and 22Ne (9.25%). ... ...

3. The Big Blue Neon Light (Enc1101)
   

   The Big Blue Neon Light (ENC1101). ... There was complete darkness, however, in the distance
   the only thing visible was a bright blue neon light to my right. ... ...

4. Neon
   

   Neon. My name is Neon and I am a very unique person. ... I do not have any really close
   friends, but those that know me call me Ne, which is short for Neon. ... ...

5. Neon Genesis Evangelion
   

   Neon Genesis Evangelion. Neon Genesis Evangelion ( V ¢‹IƒGƒ"ƒ@ƒ"ƒQƒŠƒIƒ",
   Shin Seiki Evangerion?) is an anime television ... ...